gEDA is installed using macports, but when installing i found a little problem when xgsch2pcb complained about a missing update-desktop-database
complete install commands:
693229d044a5e9440d1a125f93cadc2a000
useful addition: Mac OS X launchers for the commandline tools make it easy to start the apps and to double click documents, launches X11 and the responsible program:
http://www.msarnoff.org/geda-mac/